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The Sulfuro Primario de Cerro Verde Project is a macroproject for the expansion of the Cerro Verde mine, which has the objective of tripling copper production.Experience gained from the Toquepala Project was of great help to ULMA Construcción when confronting the new challenges posed by this work. It is also worth mentioning that the largest construction companies in Peru participated in this project.The project encompassed the construction of the first, second and third crushers, Silos, Mills, Flotation System, Grinder, Recycling Chamber, Filters, Warehouses, etc. Some of the most important structures to be specially considered are the silos, which are 41 m high structures with an area of 1625 m², and the mills, which are large block structures of 5 m high and within an area of 1550 m².